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Maintenance Memos
^ PROMECnOmSTS
JUNE
24
Test non-synch equipment for quality, steadiness, wear. Lubricate non-synch motor.
28
Test each loudspeal<er unit INDIVIDUALLY for volume, quality and rattle-free operation.
JUNE
25
Try out announcing mike for quality and to prove mike circuit. Check button currents (if carbon).
JUXE
29
Test volume controls. Correct or replace any that are not COMPLETELY noiseless in operation.
JUNE
26
If your projection ports have gloss soundproofing check cleanliness of the glass — clean as needed.
JUNE
30
Are projection, sound optical surfaces CLEAN — mirrors free from defects of silvering?
JUNE
27
Is projector vibration increasing? Check carefully for the cause and remedy it promptly.
JULY
Is the takeup action smooth, and correct; the belts or chains tout and not excessively worn?
JULY
2
Check readings of tube meters; reploce tubes as necessary for quality and reliable operation.
JULY
Is rectifier cooling fan behaving normally? Rectifier operating at the proper temperature?
JULY
Is sound track alignment the best possible to avoid sprocket hole and frame line noise?
JULY
Using a watch, check the starting time of both projector motors. Have they slowed down?
JULY
6
Is your stock of spore parts COMPLETE? Have you enough carbons — for ALL needs?
JULY
Examine projector and soundhead gears; order replacements in advance if any ore seriously worn.
JULY
8
Check all motor-generators for cool bearings, commutator condition, freedom from sparking.
JULY
9
Check all oil cups, oil reservoirs, grease cups, other lubricating points. Lubricate as needed.
JULY
Inspect tungar rectifier tube filaments. Replace all tubes that show any serious filament sag.
JULY
14
Check film guides,
ten
slon shoes, idlers.
aper
ture plates, for
wear.
Order replacements
now.
JULY
11
Watch the screen
care
fully during showi
ng of
titles for even
slight
travel ghost.
JULY
15
Examine the asbestos covered leads to all lamphouses. Are they still in good condition?
JULY
12
Test fire shutters of projectors for reliability; chock action of port safety shutters.
JULY
13
Rotate the pre-focussed exciter lamps into operating position. Are they in perfect focus?
JULY
16
Examine carbon jaws in all lamphouses. Sandpaper as necessary to remove all roughness.
JULY
17
Listen to sound critically; ony flutter or wowtf Remedy cause in soundhead or projector.
JULY 18
Examine all sprocket taath in projector and foundhMd for signt of wear and undercutting.
JULY 19
Test each loudspeaker unit INDIVIDUALLY for volume, quality and rottla-frae operation.
JULY 20
Test volume controls. Correct or replace any that are not COMPI ETELY noiseless In operation.
JULY 21
Are projection, sound optical surfaces CLEAN— mirrors free from defects of silvarino'